wright



W. L. WRIGHT.

PAPER CAN AND OTHER CONTAINER.

APPLICATION FILED JAN-22. 1911.

Patented July 1, 1919.

2 SHEETS-SHEET 1.

W, L. WRIGHT.

PAPER CAN AND' OTHER CONTAINER. APPLICATION FILED JAN. 22. 1917.

1,308,317. Patented July 1, 1919.

2 SHEETSSHEET 2.

*QWILBUIB. L. WRIGHT, or BALTHIIORE, MAB.

OFFICE.

YLAND, ASSIGNOE TO SEALRIGHT (10., INQ,

OF FULTON, YORK, A. CORPORATION OF NEW YORK.

PAPER CAN AN D OTHER CONTAINER.

To all whom it may concern:

Be it known that I, WILBU'R L. Wmen'r, a citizen of the United States, and resident of Baltimore, State of Maryland, have invented certain new and useful Improvements in and Relating to Paper Cans and other Containers, of which the following is a specification.

This invention relates to certain improve ments in paper cans and other containers; and the objects and nature "of the invention will be readily understood by those skilled in the art in the light of the following explanation of the accompanying drawings illustrating what I now believe to be the preferred mechanical expression or embodiment from among other forms, constructions and arrangements withinthe spirit and scopeof my invention.

The pa er can of my invention is characterized by a body longitudinally tapered 'at least to the extent necessary to permit nesting of can bodies for packing and shipment, and having a cylindrical or approximately cylindrical upper end combined with an exterior slip cover of such relative formation. with respect to the'cylindrical end .of the can body as to becapable of forming an approximately tight closure therefor.

An object of the invention is to provide paper cans or containers that can be conveniently nested for packing and shipment, that can be economically manufactured, that are provided with and are capable of being tightly sealed by Slipcovers, and that will be durable in use for the purposes intended.

With these and other ends in view the invention consists in certaifl novel features in construction and in formations, arrange ments and combinations as more fully and particularly set forth and specified hereinafter. 4

Referring to the accompanying drawings: 7 Figure 1, is a perspective of a paper can constructed in accordance with myinvention, the can being closed byits Slipcover shown in section, the closed lower end of the can being broken away.

Fig. 2, is a vertical section.

Fig. 3, is a cross section on the line 3--3,

Fig 5.

ig, 4, is a cross section on the line 4-4, Fig. H

Fig. 5, is a vertical section of a modified construction.

Specification-of Letters Patent.

. Patented July 1, 1919.

Application filed January 22, 1917. Serial No. 143,621.

Fig. 6, of Flg. 1.

. Fig. 7, is a vertical section of the can body of Fig. 5.

Fig. 8,.is a construction;

Fig. shows a blank for of Fig. 8. p

' Fig. 10, is a crossgsection through the approximately cylindrical mouth portion of a paper canv tapered for nesting, showing the surplus material formed into approximately overlapping folds or tucks in reducingt'he large tapered end of the body to approximately'cylindrical form. r

The particular object is to produce paper cans capable of being nested for shipment and also capable of being tightly closed and braced and stiffened by exterior cylindrical slip covers. Y

To attain this object, I can form a tapered or truncated-cone body by folding a flat is a vertical section of the canbody perspective view of a modified forming the can paper blank having converging longitudinal edges, around a tapered mandrel, and tightly cementing together the ,overlappin longitudinal edges of the blank to fd rm the tapered body with a permanent longitudinal .seam. I can then; by suitable means, contract the upper (the large) end of this tapered paper body, intopermanent approximately cylindrical form of the necessary length to exteriorly and longitudinally recelve .a cylindrical slip cover, by compressing, drawing, or gatherin of said end of the body into a multiplicity of longitudinal folds, tucks, flutes or corrugations, which will stiffen the upper end of the can body as well as maintain the same contracted into approximatelyxcylin drical form. In contracting the large flared end of the body to approximately cylindrical form, the resulting surplus materlal can be compressed or displaced radially into longitudinal depressions and elevations of such size and form as to be clearly visible and the surplus paper a plane or smooth surface. The form and appearance of the contracted mouth portlon depends on the formation of the surfaces of the means employed to contract the large ends of the paper bodies and whether or not said surfaces are designed and operated to have an ironing or smoothing action on the paper. The surplus'material can be formed into approximately overlappin tucks or folds or into a great multipliclty of very narrow hardly visible flutes or corrugations or into comparatively large in and out radial bulges.

In the drawings, I show paper can bodies 1, tapered or of conical formation to the extent necessary to permit nesting of the bodies for packing and shipment. These bodies are formed With any suitable or usual bottom closures, which I do not illustrate in the,

drawings as my invention does not involve the bottom formation of the can.

The upper end i. e. the large end 2, of the can body is of approximately cylindrical formation and this longitudinal or vertical cylindrical end 2 is of a length approxi-' mately equal to the length of the cylindrical exterior slip cover 3, and in effect forms the mouth portion of the can.

The can bodies of Figs. 1 to 7 each has its cylindrical upper end formed with a multiplicity of closely arranged longitudinal in and out folds, flutes, tucks or bulges 20, whereby said end is gathered or corrugated to cylindrical form and thereby stiffened and strengthened. Each longitudinal fold, tuck or corrugation 2Q usually longitudinally tapers or reduces in depth or width toward its lower end and there gradually merges or disappears into the paper wall of the can about at the shoulder or annular line 4 where the cylindrical portion merges into the tapered portion of the body. a The surplus material can be taken care of by longitudinal depressions and elevations, such as 20 or by approximately overlapping folds or tucks 20 Fig. 10, or in any other suitable manner, and in the claims I employ the term corrugated as descriptive of such depressions, elevations, tucks and folds, in a broad sense.

In the construction of Figs. 1 and 2 the slip cover is composed of a flanged paper disk 30 and a cylindrical paper band 31 at its upper end turned in and down over the flange of the disk to form a locking crimp can body with its-lower'edge slipping into more or less tight sealing engagement with the annular plane portion 4 of the body where the vertical and tapered portions of the body join.

This flange or cylindrical If so desired, the slip cap 35 can be pressed up from a single piece of paper, as shown in Fig. 5, and the depending cylindrical portion of this cap can be either plane or corrugated. The cap 35 is shown with its top depressed to formthe cap with an annular groove or socket 36 to snugly receive the top edge 25 of the body and aid in forming a tight seal between the cap and body.

The exterior slip covers snugly fit and surround the upper ends of the paper cans and materially stiffen and brace the cans and maintain the upper ends thereof in their desired contracted approximately cylindrical form. These exterior slip covers are particularly effective in tightly sealing and strengthening the mouth portions of the bodies when the .containers are approximately filled with liquid, for any tendency of the contracted mouth portions to expand or assume their original flared form, when moistened, is resisted by the exterior slip covers, and expansion of said mouth portions within the covers but tends to tighten the seal between the bodies and covers.

In the drawings for purposes of illustration, the flutes or depressions and elevationsforming the corrugations and the taper of the bodies are shown somewhat exaggerated. The paper can body tapered for nesting and having the cylindrical large upper end to receive the cylindrical exterior slip cover,

.can be produced without the longtiudinal corrugations, by folding the same from a flat blank a, having longitudinal edges that are parallel at the large end 6 of the blank and that converge therefrom toward the small end of the blank (see Fig. 9). The parallel portions 6 of the blank edges are of a length to produce the large cylindrical end of the can body of the required length to snugly receive the standard cylindrical slip caps. This blank can be folded and pressed to the desired form on a mandrel and its overlapping edges secured together to form a longitudmal permanent joint or seam throughout the length of the tapered and cylindrical portions of the completed body.

In Fig. 8, I show a paper can body (on a reduced scale) formed from a blank approximately of the shape shown by Fig. 9. This can of Fig. 8 has its body portion 29 tapered for nesting purposes while its upper end portion 28 is approximately cylindrical to snugly receive an exterior slip cap, such as hereinbefore described preferably formed with a smooth-surface cylindrical flange as the cylindrical portion 28 of the body is in this instance plane or non-corrugated.

The depending flanges or cylindrical portions of the slip covers can be either plane or corrugated, see for instance Figs. 3 and 4. If so desired, the cylindrical portions 31 can be formed with corrugations corresponding to the corrugations of the mouth portions of the body to intermesh therewith, and there by cooperate therewith in tightly sealing the paper can.

It is evident that change-s and variations might be resorted to without departing from the spirit .and scope of my invention and hence I do not wish to limit myself to the exact disclosures hereof but consider myself entitled to all such departures as fall within the spirit and scope of the invention.

What I claim is 1. A paper can having its body tapered for nesting and formed with a longitudinal approximately cylindrical upper end, said body formed by a stiff paper blank having its longitudinal edges overlapping and permanently secured together and forming a seam throughout the length of the body. and an exterior slip cover formed-to snugly fit on and surround said cylindrical end and stifi'en the same.

2. A paper can having its body approximately cylindrical at its mouth portion to receive an exterior slip cover and to be sealed thereby, said body tapering directly from and merging into said cylindrical end toward its opposite end for nesting, said body composed of a sheet having its longitudinal edges secured together to form a permanent lap joint throughout the length of the body, in combination with an exterior slip cover fitting and stiffening said cylindrical mouth portion, substantially as described.

3. A paper can having its body tapered for nesting, the large end portion of said body being contracted to permanent longitudinal cylindrical form with the surplus material forming corrugations, said cylindrical end portion being formed to snugly and longitudinally receive an exterior slip cover for sealing the body, said body com posed of a paper sheet having its ends secured to form a lap joint extending throughout the length of the body, the tapered portion of the body formed by a non-contracted portion of the sheet.

4:. A paper can having its body composed of a. blank having its longitudinal edges overlapping and secured together to form the body with a permanent liquid tight longitudinal seam, said body being longitudinally tapered for nesting, the large longi-.

tudinal end portion of said body being approximately cylindrical, and an exterior slip cover for closing said large end of the body. 5. A paper can having its body tapered for nesting and having its longitudinal mouth portion only contracted to cylindrical form in direct continuation of the large end of the tapered portion and longitudinally corrugated, substantially as described.

6. A paper can having its body tapered for nesting, the mouth portion of the body being approximately cylindrical and corrugated, and an exterior slip cover for said mouth portion said cover having its cylindrical portion corrugated to mesh with the corrugations of said mouth portion.

7. In a paper can, in combination, a paper body tapered for nesting and having its mouth portion of approximately cylindrical longitudinal formation, in direct upward continuation of the large end of the tapered portion, and a slip cover fitting longitudinally and exteriorly on said cylindrical portion and having an annular top groove receiving the top edge of said portion.

8. In a paper can, a slip cover having a depending cylindrical flange, in vcombination with a tapered can body having a stiff longitudinal paper wall of cylindrical formation around the open top end of the body exteriorly formed to longitudinally and snugly receive the flange of said cover, said body directly tapering without contraction of the paper wall from said cylindrical end toward the opposite end for nesting, the taper of the body extending to and gradually merging into said cylindrical end, said cylindrical end being entirely inclosed and stiffened by said cover, substantially as de scribed.

9. A stiff paper wall can body contracted movable exterior slip cover having its de-' pending cylindrical flange conforming to the surface of and snugly fitting said cylindrical end throughout the length thereof and onto the junction between the tapered and cylindrical portions of the body to form an approximately tight seal.

10. A stiff paper wall can body having a short cylindrical exterior slip-cover-seat forming mouth portion, said body being longitudinally tapered downwardly throughout its length, for nesting, except for the cylindrical upper end, the said short upper end of said wall being radially contracted to permanent cylindrical formation with the surplus paper material forming longitudinal tucks, creases or corrugations gradually merging at their lower ends into the wall at the juncture between the tapered and cylindrical portions of the wall, substantially as described.

Signed WILBUR L. WRIGHT. 

